<?php
/**
 * CJuiDatePicker class file.
 *
 * @author Sebastian Thierer <sebathi@gmail.com>
 * @link http://www.yiiframework.com/
 * @copyright 2008-2013 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

Yii::import('zii.widgets.jui.CJuiInputWidget');

/**
 * CJuiDatePicker displays a datepicker.
 *
 * CJuiDatePicker encapsulates the {@link http://jqueryui.com/datepicker/ JUI
 * datepicker} plugin.
 *
 * To use this widget, you may insert the following code in a view:
 * <pre>
 * $this->widget('zii.widgets.jui.CJuiDatePicker',array(
 *     'name'=>'publishDate',
 *     // additional javascript options for the date picker plugin
 *     'options'=>array(
 *         'showAnim'=>'fold',
 *     ),
 *     'htmlOptions'=>array(
 *         'style'=>'height:20px;'
 *     ),
 * ));
 * </pre>
 *
 * By configuring the {@link options} property, you may specify the options
 * that need to be passed to the JUI datepicker plugin. Please refer to
 * the {@link http://api.jqueryui.com/datepicker/ JUI DatePicker API}
 * documentation for possible options (name-value pairs) and
 * {@link http://jqueryui.com/datepicker/ JUI DatePicker page} for general
 * description and demo.
 *
 * @author Sebastian Thierer <sebathi@gmail.com>
 * @package zii.widgets.jui
 * @since 1.1
 */
class CJuiDatePicker extends CJuiInputWidget
{
    /**
     * @var string the locale ID (eg 'fr', 'de') for the language to be used by the date picker.
     * If this property is not set, I18N will not be involved. That is, the date picker will show in English.
     * You can force English language by setting the language attribute as '' (empty string)
     */
    public $language;
    /**
     * @var string The i18n Jquery UI script file. It uses scriptUrl property as base url.
     */
    public $i18nScriptFile = 'jquery-ui-i18n.min.js';
    /**
     * @var array The default options called just one time per request. This options will alter every other CJuiDatePicker instance in the page.
     * It has to be set at the first call of CJuiDatePicker widget in the request.
     */
    public $defaultOptions;
    /**
     * @var boolean If true, shows the widget as an inline calendar and the input as a hidden field.
     */
    public $flat = false;

    /**
     * Run this widget.
     * This method registers necessary javascript and renders the needed HTML code.
     */
    public function run()
    {
        list($name, $id) = $this->resolveNameID();

        if (isset($this->htmlOptions['id']))
            $id = $this->htmlOptions['id'];
        else
            $this->htmlOptions['id'] = $id;
        if (isset($this->htmlOptions['name']))
            $name = $this->htmlOptions['name'];

        if ($this->flat === false) {
            if ($this->hasModel())
                echo CHtml::activeTextField($this->model, $this->attribute, $this->htmlOptions);
            else
                echo CHtml::textField($name, $this->value, $this->htmlOptions);
        } else {
            if ($this->hasModel()) {
                echo CHtml::activeHiddenField($this->model, $this->attribute, $this->htmlOptions);
                $attribute = $this->attribute;
                $this->options['defaultDate'] = $this->model->$attribute;
            } else {
                echo CHtml::hiddenField($name, $this->value, $this->htmlOptions);
                $this->options['defaultDate'] = $this->value;
            }

            $this->options['altField'] = '#' . $id;

            $id = $this->htmlOptions['id'] = $id . '_container';
            $this->htmlOptions['name'] = $name . '_container';

            echo CHtml::tag('div', $this->htmlOptions, '');
        }

        $options = CJavaScript::encode($this->options);
        $js = "jQuery('#{$id}').datepicker($options);";

        if ($this->language != '' && $this->language != 'en') {
            $this->registerScriptFile($this->i18nScriptFile);
            $js = "jQuery('#{$id}').datepicker(jQuery.extend({showMonthAfterYear:false},jQuery.datepicker.regional['{$this->language}'],{$options}));";
        }

        $cs = Yii::app()->getClientScript();

        if (isset($this->defaultOptions)) {
            $this->registerScriptFile($this->i18nScriptFile);
            $cs->registerScript(__CLASS__, $this->defaultOptions !== null ? 'jQuery.datepicker.setDefaults(' . CJavaScript::encode($this->defaultOptions) . ');' : '');
        }
        $cs->registerScript(__CLASS__ . '#' . $id, $js);
    }
}